198 HELIX-CAM^ENA. 



other hand it differs from the Camcena of authors in the elimination 

 of the species of Euhadra etc. My group is therefore essentially a 

 new one, not equal in any sense to the Camcena of previous authors. 

 These shells range from China to the Philippines and northeastern 

 Borneo. They fall into two groups of species : (1) group of H. 

 cicatricosa, embracing species of China and Farther India, and (2) 

 group of If. monochroa, including the species of the Philippine 

 Islands and northeast Borneo. 



Group of If. cicatricosa Mull. 



H. CICATRICOSA Miiller. PI. 21, figs. 45, 46, 47. 



Shell sinistral, umbilicated, subcarinated, depressed-globose, yellow 

 with numerous chestnut bands and lines. 



The shell is globosely depressed, with a rather high dome-shaped 

 spire ; the periphery is a little carinated in front of the mouth, but 

 becomes rounded. It is solid and strong, of a straw-yellow color, 

 with very numerous encircling chestnut lines and bands, the widest 

 immediately below the periphery. The surface is covered with a 

 dense, close wrinkling or malleation, the wrinkles irregular, obliquely 

 descending on the upper surface, concentric on the J)ase. The spire 

 has low, inconspicuous radiating folds below the sutures. Whorls, 

 5|, those of the spire nearly flat, the last convex ; not descending in 

 front. Aperture lunate, pinkish-white inside ; peristome white, re- 

 flexed, dilated half over the umbilicus. 



Alt. 32, greater diam. 48, lesser 41 mill.. 



Alt. 26, greater diam. 40, lesser 33 mill. 



Central China* 



H. cicatricosa MULLER, Hist. Verm., p. 42, 1774 (a specimen with- 

 out peristome). PFR. Monogr. i, p. 330. VON MARTENS, Ostasia- 

 tische Landschnecken, p. 47. MLDFF. Jahrb. d. Mai. Ges. 1884, p. 

 373, and of authors generally. H. cornu venatorium /?, GMEL. Syst. 

 Nat. xiii, p. 3641. H. contraria HUMPHREY, Mus. Calonnianum, 

 p. 60. H. senegallensis contraria arborea CHEMN. Conch. Cab. ix, 

 p. 85, f. 917, 918. H. senegalensis Chemn., FERUS. Hist., t. 78, f. 1. 

 2 ; and of 'Lam. edit. 2. H. chinensis VOIGT, Cuvier's Thierreich, 

 transl. iii, p. 61. Ariophanta cicatricosa Mull., Beck, Index, p. 5. 

 H. cicatricosa var. ducalis ANCEY, Bull. Soc. Mai. France, 1885, p. 

 129. H. cicatricosa var. inftata MLDFF., Jahrb. d. Mai. Ges. 1885, 

 p. 393, t. 11, f. 20. 



